Oil-burning steam-boiler.



PABNTEDSEPT. 11, '1906. T. W. HEINTZELMAN L J. G. cAMP.

OIL BURNING STBAMBOILBR. APPLIUATIQN FILED NOV.14.1005.

z SHEETS-SHEET 1.

' wrrwsssss N0. 830,833. PATENTED SEPT. 11, 1906.

T. W. HEINTZBLMAN &'J. G. CAMP.

" OIL BURNING STEAM BOILER.

APPLICATION FILED NOV.14. 1905. I

2 SHEETS-SHEET 2.

" Y TE i s'rA'frEs PATENT oEEIo E fI TAYLOR W. HELNTZELMAN AND JAMES e.CAMP, E sAoEAMENi-o,`

i I xcALiEoENr-A.

OIL-BURNlNG STEAM-BOILER.

Specification of Letters Patent.

Patented sept. 11, iee.

Application filed November 14, 1905. Serial No. 287,231.

i To a/ZZ whom it may concern:

Be it known that We, TAYLOR W. HEiNT- .zELMAN and JAMES G. CAMP, ofSacramento, p

means being`designed to attain completel combustion of the fuel withinthe fire-box and the-,application of the evolved heat to the entireheating-surface of the ire-boX without injury to the fire-box sheets orinducing leaky flues and withoutunduly heating the `front end orsmoke-arch, thereby avoiding the objections heretofore encoun- -tered ofleaky steam-pipes and tubes in front end.

A further and special object of our invention is to enable brick archesand walls of the various forms ordinarily heretofore employed to bedispensed with, thereby materially. re-

ducing the quantity of brick required.

The improvement claimed is hereinafter l fully set forth.

In the-accompanying drawings, Figure l is a vertical longitudinalcentral section throu h the fire-box and adjoining portion of te waistof a steam-boiler, illustrating an application of our invention; Fig. 2,a rear view in elevation of the same; Fig. 3, a vertical transversesection on the line a a, of Fig. 1- g and Fig. 4, a vertical sectionthrough the lower portion of the front wall of the fire-box,illustrating a modification of structural detail.

Our invention is herein exemplified as embodied in a locomotive-boilerof the Ordinar narrow and deep fire-box type 3 but, as wi l appear upona consideration of its essential structural and operative features, itis not limited in application to this or any other special type or formof Steam-boiler, being adapted to'use in any of the variousconstructions which are provided with a fire-box or furnace rnd tubes orflues leading therefrom. In the instance herein shown theinsidemiire-box l is of the usual form and is closed at its top by acrown-sheet 2 and surrounded by vertical water-spaces 3,- the bbttoms ofwhich are closed by a mud-ring 4, as in ordinary locomotive-boilerpractice. The outside fire-box 5 is connected to the waist 6,

through Which the 4tubes 7 pass from the tube-sheet 8 to 'a smoke-box ofthe usual form (not shown) at'the front end ,of the boiler.

In the practice of our invention the inside fire-box 1 is closed at'bottom by a sheet or plate metal box or casing 9, which correspondssubstantially in general form and location with the ordinary ashan ofboilers in will be herein Y which solid fuel is used an descriptively.referred to as the lbottom pan. The bottom pan 9 is closed at allpoints except. as to aiplurality of draft-openings 10, located in itsits bottom, sides, front, and rear with a rebrick lining 11, whichextends upwardly for a short distance at its sides and for a greaterdistance at its rear into the inside fire-box 1. l

In all oil-burning ap liances of the type in which a jet of atomizehydrocarbon is introduced into the fire-box ator near its rear end orthat farther from the tube-sheet, so that ont wall, and is provided onthe flame from the burner is projected in the same direction as thetraverse of the draft-K that is to say, forwardly toward thetubesheet-it has been the practice in order to protect the tube-sheetand tubes from the direct action ofthe high heat of the ame, as

well as to direct the heat, as far andas uniforml as may be over Athesurfaces of the side, fiack, and crown-sheets of the fire-box, to locateone or more transverse brick Walls or arches in the fire-box, one ofthem adjoining or being located a short distance in the rear of thetube-sheet and below the tubes.

It will be obvious -that brick walls or arches with thepbject of notonly dis ensing with the ordinary brick walls andare es, butalso ofobtainin tos a more uniform and effective a plication o vthe heat fromthe burner to t e heating-surfaces of the fire-box than has usually beenattainable when the arch is used, consists in combining with are-boX-and a floor or bottom pan a burner which delivers its flamerearwardly or in opposite direction to the draft above said floorwithoutV obstruction from arches, bridge-walls, or other analoousmembers, means for supplying air to thev e-box adjacent to the burner,and a drafty o enlng 1n the rear wall of the fire-box above t eilevel ofthe burner, through which a curren of air is directed upon the flame,which is thereafter caused to travel forwardly below the crown-sheet tothe tubes by the draft through the same. Under this construction thehydrocarbon fuel is consumed in the fireboX, imparting substantiallyuniform heat to all the heatin -surface thereof without direct action ofthe ame from the burner upon the tube-sheet and tubes and without highlyheating the smoke-box and contained steamp1 es.

,nder our invention we provide an oilburner 12, which may be of anysuitable and approved construction, various types being familiar tothose skilled in the art, and which is located in front of the fire-boxwith its dischar e or delivery nozzle 12a extendin rearwarfy and openingthereinto. Iny t e instance shown the deliver nozzle passes through anopening in the ont sheet of the bottom an 9; but it will be obviousthat, if preferred, it may, as shown in Fig. 4, be led through a hollowstay or sleeve in the lower portion of the front Water-space 3, as haseen done in a number of cases by us with equally satisfactory results inpractice. Oil

is supplied to the burner through an oil-supply pipe 13, leading from asuitable tank or receptacle and controlled by a firing-valve '131),which is actuated by a hand-lever 13a through connections 14, 15, 16,and 16a. The oil is, as in ordin ary'practice, preferably heated bymeans of a superheater 17, through which the oil-supply pi e 13 passeson its way to the burner and W ich is supplied with steam from theboiler through a pipe 18, controlled by a valve 19, and is atomized anddischarged into the fire-box by a jet of steam admitted to the burnerthrough a ipe 20, controlled by`a cock 21. The detailbd construction ofthe burner and its accessories is not, as above indicated, an essentialof our invention, and the same may be varied in the discretion of theskilled constructor without departure therefrom. rlhe burner shown is,however, one which is simple, durable, 'and inexpensive and is nowsuccessfully operating in regular service.`

A blower-pipe 22, controlled by a valve 23,

serves to maintain draft on the fire when the steam is shut off, and theexhaust-steam blast, which is operative in running, is consequently noteffecting draft through the tubes.

'[he supply of air to the fire-box for thel combustion ,of the liquidhydrocarbon fuel-is effected below and at the sides of the burner' 12through one or more lower draft-o eni'ngs 10, `formed in the frontwallof the ottom pan 9. For convenience of construction, as well as forinsuring proper distribution of. the incomin air,a lurality ofdraft-openings is provide and t ese are preferably formed of l I narydoor-opening used with solid fuel conpassage, which f stitutes the u perair-suppl is controlled by a door 25, liaving a similar hinged door ortrap 26, which covers a transverse opening in the door and is turned lto uncover said opening, .as shown in ig. 1. The deflecting-plate 27 isconnected to the inside of the door and may be adjusted to the angledesired for downwardly deiiecting the incoming current ofiair. Thespecific construction of door, trap, and defiectin -plate herein shownis not claimed in and o itself as of our invention and'has been adoptedby us as being one which is suitably adapted for the purpose.

It will be obvious that any other-preferred form of similarly-locatedair admission and deflecting devices may be employed in the discretionof the constructor Without" departure from the spirit and operativeprinciple of our invention. i

In the operation of our invention the fiame of the mixture of atomizedoil and steam which is delivered rearwardly from the discharge-nozzle'ofthe burner passes above the floor of the bottom an of the fire-box, andthe draft of the eX aust, by which air is drawn in throughthe'draft-openings 10, beingin the opposite direction tends to raise theflame in its rearward traverse, in which it meets the oppositely-movingcurrent of air from the upper air-supply passage 24, and thereafterpasses forwardly through the firebox below the crown-sheet to the tubes.The oil is found in practice to be consumed in the inside fire-box witha very uniform a plication of heat to the heating-surfaces t iereof, andthe flame produced, which is of a lemon color, is softand does notinjure the crownsheet or tube-sheet or cause leaky tubes, a substantialadvantage having been gained in this latter particular over appliancesheretofore used in the same service.

Our invention has been ap lied and is new in service in connection wit ithe -boilers of several locomotive-engines, thel construction used beingin all essential )artieulars substantially the same as that flereindescribed and shown and has in regular service com- IOO plied with allthe re uirements thereof and obviated objections which had been found toexist to a substantial degree in constructions theretofore used insimilar service.

We claim as our invention and desire to secure by Letters Patent- 1. Thecombination, with a steam-boiler having a fire-box closed at bottom, ofmeans for delivering a hydrocarbon flame rearwardly into the hre-box,means for establishing a draft of air into the fire-box adjacent to thedelivery of the hydrocarbon flame thereinto, and means for admitting airdirectly into the rear of the fire-box and above the level of deliveryof the hydrocarbon flame.

2. The combination, with a steam-boiler having a fire-box closed atbottom, of m'eans for delivering a h drocarbon flame rearwardly into thefireox, means for establishing a draft of air into the fire-box adjacentto the delivery of the hydrocarbon flame` thereinto, means for admittingair at the rear of the fire-box and above the level of delivery of thehydrocarbon iiame,. and means for downwardly deflecting the air admittedat the rear.. of the fire-box.

3. The combination, with a steam-boiler having a fire-boi( closed atbottom, of a hydrocarbon burnerV/f discharging rearwardly into thefire-box at the front end thereof,A the front of the fire-box beingprovided with lower draft-openings for the admission of air to thefire-box below and on opposite sides of the burner, and the rear wall ofthe fire-box having an upper air-su ply passage located Within it abovethe leve of the burner.

4. The combination, with a steam-boiler having a fire-box closed atbottom, of a hydrocarbonburner discharging rearwardly into the fire-boxat the front end thereof, the front of the fire-box being provided withlower draft-openings for the admission of air to the fire-box below andon opposite sides of the burner, and the rear wall of the fire-boxhaving an upper air-su ply passage located within it above the leve ofthe burner, and a door controlling said upper air-supply passage.

5. having a fire-box closed at' bottom, of a hydrocarbon-burnerdischarging rearwardly into the fire-box at the front end thereof, thefront of the fire-box being provided with lower draft-openings for theadmission of air to the fire-box below and on opposite sides of theburner, and the rear wall of the fre-bo havin an u per air-su assageocate withiff it aboire the levefiifytl burner, and a deectinglateprojecting in to the fire-box above the evel of the upper air-supplypassage.

6. The combination, with a steam-boiler fire-box, of a bottom pan whichcloses the lower end of the fire-box, a hydrocarbonburner dischargingrearwardly into the firebox, the. front wall of the bottom pan beingprovided with lower draft-openings, and the rear wall vof the fire-boxhaving an up er airsupply passage above the level of the liurner, a doorcontrolling said u per air-supply passage, and a deflecting-plhterejecting into the fire-box above the level of) said passage.

7. The combination, with a steam-boiler fire-box, of a bottom pan whichcloses the lower end of the fire-box, a refractory lining Thecombination, with a steam-boilerlining extending partly into thefire-box, a u

hydrocarbon-burner located adjacent to the front of the fire-box, inposition to discharge its Haine thereinto above the bottom of said pan,the front wall of said pan being pro- 1s' on the bottoms and sides ofsaid pan, said

